XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.23.1

Significant Accounting Policies - Cost of Products Sold (Details) - PEDMARK $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($)
Percentage of royalties | 1.00%
Manufacturing costs capitalized to inventory | $ 0.6
Manufacturing costs capitalized to inventory, work-in-process | 0.4
Manufacturing costs capitalized to inventory, finished goods | 0.2
Manufacturing costs capitalized to inventory, cost of products sold | $ 0.1

X
- Definition Manufacturing costs related to PEDMARK and capitalized to inventory. + References No definition available. + Details
Name: | fenc_ManufacturingCostsCapitalizedToInventory
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Manufacturing costs related to PEDMARK and capitalized to inventory, amount reclassified as cost.of products sold. + References No definition available. + Details
Name: | fenc_ManufacturingCostsCapitalizedToInventoryCostOfProductsSold
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Manufacturing costs related to PEDMARK and capitalized to inventory, amount classified as finished goods. + References No definition available. + Details
Name: | fenc_ManufacturingCostsCapitalizedToInventoryFinishedGoods
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Manufacturing costs related to PEDMARK and capitalized to inventory, amount classified as work-in-process. + References No definition available. + Details
Name: | fenc_ManufacturingCostsCapitalizedToInventoryWorkInProcess
Namespace Prefix: | fenc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the percentage of royalties to be received as consideration. + References No definition available. + Details
Name: | fenc_RoyaltiesPercentage
Namespace Prefix: | fenc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=fenc_PedmarkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |